.middle {
    width: 1200px;
    margin: 50px auto;
    border: 1px solid red;
    height: 800px;
}

.online-introduce {
    height: 40px;
    border-bottom: 1px solid red;
    font-family: 仿宋;
    line-height: 40px;
    font-size: 25px;
    padding: 15px 0 15px 15px;
}

.middle > div:nth-child(2) > div p span:first-child {
    font-size: 30px;
    color: #e69137;

}

.middle > div:nth-child(2) > div p:first-child {
    display: flex;
    justify-content: center;
    align-items: center;

}

.middle > div:nth-child(2) > div p:last-child {
    display: flex;
    justify-content: center;
    margin: 10px 0;
}

.middle > div:nth-child(2) > div {
    margin: 50px 0 30px;
}

/*------------------------留言------------------------------------------------*/
.middle > div:nth-child(2) > div:nth-child(2) {
    width: 600px;
    margin: auto;
}

.middle > div:nth-child(2) > div:nth-child(2) input[type=text] {
    width: 600px;
    background-color: cadetblue;
    border: 1px dashed red;
    height: 40px;
}

.middle > div:nth-child(2) > div:nth-child(2) textarea {
    width: 600px;
    background-color: cadetblue;
    border: 1px dashed red;
    height: 100px;
}

.save {
    width: 100px;
    margin:30px auto;
}

.save input[type=button] {
    width: 100px;
    height: 40px;
    background-color: #e69137;

}